Settling-tank.



A. G. J. RAPP.

SETTLING TANK;

APPLICATION men OCT. 26. 1914.

1,137,351, Patented Apr. 27, 1915.

- $7 fir AxeZ 6 22a;

UNITED STATES PALE??? FFRJE,

AXEL G. J. RAPP, OF CHICAGO, ILLINOIS. ASSIGNOR T0 LIN'KZELT COMPANY, CF

CHICAGO, ILLINOIS, A CORPORATION 05:

ILLINOIS.

SETTLING-TANK.

Specification of Letters Patent.

iatented Apr. 2'3, 1915-.-

To all ulmm it may concern:

Be it known. that I, AXEL G. J. Barr, a. citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Settling-Tanks, of which the following is a specification.

My invention relates, generally speaking, to improvements in settling tanks and has for one object to provide a new and improved means for separating out or withdrawing the sand from the water in the settling tank, particularly in connection with the line silt in gravel washing.

My invention is illustrated more or less diagrammatically in one form in the accompanying drawing wherein-- Figure 1 is a vertical section through my device. Fig. 3 is a side elevation viewed in the direction of the arrow in Fig. 1.

A, A is a main supporting frame, A is a. settling tank; it may be pyramidal or conical or any other suitable shape, provided, as indicated, the bottom is materially smaller than the top and the bottom and side'walls are rapidly sloping to permit material to slide down toward the center. This tank is supported at one side by means of a hearin A bein" held free to rotate D i C about that hearing. It is supported at the other side by a knife edge A, resting on a lever A. This lever has a fulcrum A and is counterlm ance'd by an adjustable weight A. There is an opening 15 at the bottom of the tank closed by any suitable door such as the conical plug I3. T his plug is suspended by a stem l5 guided at 13 an supported on the end of the lever A.

' C is a chute through which water bearing sand or other particles in suspension is allowed to flow into the tank.

C is an overflow tank or trap for the Water arranged beneath the edge of the tank into which the overflow water is guided by the veins C on the tank;

D is a sand receptacle located beneath the tank to. receive the hiatcrial discharged through the bottom opening when the plug or' door is open.

It'will be evident that while I have shown in my drawing an operative device, still many changes might be made in the size,

shape andarrangeriient of parts without de parting materially from'the spirit of my invention. I wish, therefore, that my drawing be taken as in a sense diagrammatic;

lhe use and operation of my invention are as followsz-The water bearing the fine particles in suspension is permitted to flow into the tank, filling it and gradually overflowing and running oli' around the edge. The water being more or less at rest in the tank, the-tine material in suspension set es to the bottom and will fill the. tank to a certain level. This material being heavier than the Water adds to the weight of the tank until finally it has sufiiciently counterbalanced the weighton the end of the supporting lever' and the tank descends, slightly tipping the lever. However, since the tank is supported on the lever adjacent the fulcrum and the plug or valve is supported on the lever at a point far removed from the fulcrum, the valve will go down more rapidly than the tank and therefore the valve will be'open and the sand will rush out through the opening at the bottom until enough has gone to permit the weight to draw theta-nk back up to its normal filling position. This process continues as lohg as water containing sand or other fine particles is fed'to the tank.

I claim:

1. ,A settling tank pivoted at one side, a

scale beam supporting the opposed side, on extension on the scale beam projecting over the tank the bottom of the tank being apertured for discharge, a valve controlling said aperture and a connection from the scale l I beam extension to said valve said COIIDGCtlO'Il passing up through thetank, the tank and valve rod being each connected to the beam on the same side of its fulcrum, the latter tank commotion.

'2. settling tank pivoted at one side supported at the other side by a weighing mechanism, having a discharge portQat'the bot-v tom thereof and a valve mounted for vertical movement to and from said port to control it, a valve stem projecting upward from said port through the said tank andan extension from the weighing means overhanging the tank and supportingsaid valve stem, the tank and valve rod being each connected to the beam on the same side of ,its*f' ilcrum, the-latterbeing farther -from the fulcrum than the tank connection.

being farther from the fulcrum'than the 1 I 3. A settling tank pivotally mounted on one side a scale beam, a connection between the scale beam and the tank and an extension projectin from said scale beam on the 5 side removed rom the'fulcrum ofthe beam and overhanging the tank and a valve stem passing up through the tank and suspended on said extension, the tank and valve .rod

7 being each connectedr o the beam on'the 10 same side of its fulc in, the latter bein farther. from the fulcrum than the tan% connection. V A

354:.3A settling tankpivoted. to one side, a vscale beam supporting the'opposed side, a

1'5"discharge"valve on the bottom of the tank and means for moving the valve and tip tank in the same direction at different velocities, said means comprising an extension projecting from the scale beam beyond its point of connection with the tank and overhanging the tank and a connection from it to the valve.

In testimony whereof, I afiix my signature in the presence of two witnesses thi 22 day of October 1914. 

